Securing device for concrete-forms.



H. RASMUSSEN. SECURING DEVICE FOR CONCRETE FORMS.

APPLICATION FILED JAN. 31. I915- 1,192,115.'

Patented July 25, 1916.

ILLINOIS.

HANS RASMUSSEN, OF CHICAGO,

SECURING DEVICE FOR CONCRETE-FORMS.

1 1g2 115 Specification of Letters Patent. Patented July 25, 1916,

Application filed January 31, 1916.

To all whom it may concern:

Be it known that I, HANS ItiisMUssnN, a citizen of the United Statcs,residlng at Chi- Serial No. 75,384..

tance into the space to be occupied by the, concrete wall. Anchor-nuts,generally des ignated by 6, comprising elongated memcago, in the countyof Cook and State of bers, preferably formed from cast-metal, are soIllinois, have invented certain new and useprovided with longitudinalscrew-threaded ful Improvements in Securing Devices for bores 7, Fig. 8,for the reception of the lag- Concrete Forms, of which the following isa screws 5. Each anchor-nut is provided description, reference being hadto the acupon its periphery with a projection 8, excompanying drawings,forming a part of tending about half way around said nut and cs 10 thisspecification, in which corresponding preferably from about the middleto a point numerals of reference in the different figures at or near theinner end. Said projection is indicate like parts. providedwvith atransverse shouldered por- The object of my invention is to provide tion9 and longitudinal shouldered portions a simple, cheap and effectivedevice for hold- 10, the latter being in a plane parallel to the 7 o ising concrete forms in place while being filled axis of the nut. Bothshouldered portions with concrete in the erection of walls, pilare, bypreference, grooved as best shown in lars, and other analogousstructures,-the Fig. 4, to receive and form an anchorage for aim beingto construct said device that the the loop 11, of a tie-wire generallydesigmain tie members may be permitted to renated by 12. The tie-wire iscut to a pre- 75 main within the wall after the removal of determinedlength so that when secured in the forms and that without any projectingplace the anchor-nuts will be properly portion to cause defacement ofthe wall or spaced with reference to a given width of to require removalafter the form is taken wall, allowance being made for the twisting way.of the wires. Said wire is then looped so as so A further object is toso construct said deto partially surround each nut and rest vice as toobviate the necessity for skilled against the shoulder 9 as shown at 11,after labor in connection with its use. which it is bent longitudinallyof the nut so To these ends, my invention consists in as to bear againstthe shoulders 10 upon opthe combination of elements hereafter moreposite sides of the nut and in the plane of so particularly describedand definitely pointed its axis. The end portions of the wire are out inthe claims. then overlapped and securely twisted around In the drawings,Figure 1, is a plan of a the body portion as shown at 13. After formsuch as is ordinarily employed in the looping the wire upon theanchor-nut andconstruction of a concrete wall showing my fastening theends together, the loops will 35 improved fastening devices as theywould clasp the nuts with sufficient closeness to rebe used inconnection therewith, Fig. 2, is a main in permanent connection so as toon vertical section taken upon the line 2, Fig. able them to be handledand treated as one 1, viewed in the direction of the arrow there piece.They are then ready for use in the shown, Fig. 8, is a perspective viewin detail wall. 4-0 of two anchoring members, as they would Theinvention may be utilized as follows: appear when viewed from oppositeends and The holes for the screws 5, are bored in Fig. 4:, is atransverse vertical section of a proper alimenent in the walls and theportion of a concrete wall with an anchoring anchor-nuts, connected asdescribed, are held member therein as it would appear after the by anattendant opposite the bores. The lag 45 removal of the form. screws 5,with washers li thereon, are then Referring to the drawings, 1, 1,indicates projected through the bores into the anchorthe walls of theform, ordinarily consisting nuts and tightened so that the wall membersof boards arranged horizontally upon edge, 1, of the form, will pressagainst and hold 2, the vertical ribs usually made of two-bythe struts 4in place. The length of the tie- 50 four scantling and 3 the horizontalbraces. wires should be such that when thus tight- The walls 1, arespaced and held apart by ened, the outer ends of the anchor-nuts shallmeans of struts or separating bars 4. The be about half an inch, more orless, from the bracing timbers 3 and walls 1 are provided respectiveinner faces of the retaining walls. with bores in proper registrationfor-the re- The concrete is then filled in and allowed 11$ 55 ception oflag-screws 5 of sufiicient length to set, care being taken to remove thestruts to pass through said parts and a short disei, as the work isadvanced. When ready to remove the forms, an attendant takes out thelag-screws, leaving the anchor-nuts and hewires in the wall. A slightcavity, as shown at 15, Fig. i, is left in the face of the wall oppositeeach anchor-nut, which space may be readily filled with cement therebypresenting a smooth and perfect surface.

By using a tapered or pointed lag-screw, as shown at 16, Fig. 2, thescrews may be made to engage the nuts with ease and rapidity. Byconstructing the nuts with the shouldered portions described, the pullof the connecting wires will always be in the screws may be kept as apermanent part of the contractors equipment to be used over and overagain. v

Having thus described my invention, 1 claim: 1. A fastening device forsecuring the walls of concrete forms in spaced relation to each other,comprising, in combination, complementary anchoring members adapted tobe located within the wall-space away from but near to the respectiveside-walls of a form, said members having interior screwthreads forreceiving lag-screws adapted to be extended inwardly thereto throughsaid walls, each of said anchoring members being provided withperipheral wire engaging means to enable a wire to be looped over thebody thereof and extended and secured be tween them in the plane oftheir axes and a looped wire tie for engaging said engaging means toform a connection between said anchoring members.

2. A fastening device for securing the walls of concrete forms in spacedrelation to each other, comprising, in combination, complementaryanchoring-members adapted to be located within the wall-space away frombut near to therespective side walls of a form, said members havinginterior screwthreads for receiving lag-screws adapted to be extendedinwardly thereto through saidwalls, each of said anchoring members beingprovided with peripheral wire engaging means to enable a wire to belooped over the body thereof and extended and secured between them inthe plane of their axes, a looped wire tie for engaging said peripheralengaging means to form a connection between said anchoring members andlagscrews for securing said anchoring members to the walls of said forr3. A fastening device of the class described, comprising, incombination, elon gated complementary anchoring members adapted to belocated in the wall-space at a predetermined distance from therespective side-walls of a form, said members having interiorscrew-threaded bores for receiving lag-screws adapted to be extendedinwardly from opposite directions through said walls in alinement withsaid anchoring members, each of said anchoring members having aperipheral shoulder extending outwardly from its body, and partiallysurrounding said member, for receiving a wire loop thereover to form aconnecting tie between said members and holding said wire in the axialplane of the latter. I

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses, this 29th day of January 1916.

HANS RASMUSSEN.

Witnesses: 1 DAVID H. FLETCHER, L. M. BURNHAM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, 1). 0.

